The specific etiology and pathogenesis of oral lichen planus is not clear, usually not related to vitamin deficiency, common causes are immune factors, mental factors, endocrine factors, etc., as follows.
1. immune factors: pathological observation can be seen in oral lichen planus epithelial lamina with a large number of T lymphocyte infiltration, suggesting that oral lichen planus and T lymphocyte-mediated immune response.
2. Psychological factors: some patients with oral lichen planus have a history of mental trauma, anxiety and grief make the patient’s body dysfunction, prompting the development of oral lichen planus.
3. endocrine factors: the incidence of middle-aged women is higher, and some patients’ condition is relieved during pregnancy and aggravated during menstruation.
Oral lichen planus may have other causes, it is recommended to go to the hospital in time.